[Prematurity and its more frequent causes].
D000022:Abortion, Spontaneous / Q000209:etiology; D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature; D007752:Obstetric Labor, Premature / Q000209:etiology*; D011247:Pregnancy; D011248:Pregnancy Complications
Glubokaia nedonoshennost' i naibolee chastye prichiny ee.